Chord Progression Generator

Electronic music thinks in modes, not textbook keys

Most harmony tutorials live in classical major: I–IV–V and a dominant chord pulling home. Club music largely doesn’t. Melodic techno and trance sit in natural minor orbiting i, VI and VII; liquid drum & bass borrows dorian’s brighter minor; deep house vamps on m7 and m9 chords two at a time; ambient stretches lydian and slow modal mixture across whole bars. That is why this generator treats minor modes as first-class citizens and gives each genre its own transition grammar — the probability that VI moves to VII is simply different in trance than it is in lo-fi, and the chord palettes differ with it.

Voice leading is the difference you can hear

Voice leading is the craft of moving each note in a chord to the nearest sensible note in the next one, instead of jumping whole shapes around the keyboard. Played badly, Fm to Db is a four-semitone lurch; voiced well, two notes stay where they are and the others move by a tone. Almost every chord generator online ignores this and exports stacked root-position blocks. This one solves the voicing across the whole progression — minimising movement, avoiding parallel octaves in the outer voices, choosing inversions on purpose — and the piano-roll strip under each card shows you exactly what it chose. Steal the technique for your own playing; that part is free.

From browser to DAW in one drag

The export is a plain Standard MIDI File: drop it onto an instrument track in any DAW and it plays at the exported tempo with the chord and bass voicings intact — what you auditioned is what lands on the piano roll. From there, swap the sound, mute the bass track if your low end is spoken for, stretch chords across more bars, or feed the arp export through your own delay chain. Found your key with the BPM & Key Analyser? It deep-links straight back here → And before the track ships, run the master through the LUFS Checker →